20 Most Recent Akai LCT2785TA 27 in. LCD Television - Page 4 Questions & Answers

The power supply has failed on your TV and will need to be repair to the component level since no new boards are being manufactured.
I repair these power supplies, let me know if you need further assistance or need help with the repair.

If you are fortunate enough to have a TV repair shop left in your area, they will have a simple device that will detect whether or not an IR remote is sending out any coded information at all. 
Unfortunately, because there are no standards in the coding schemes used, that tester cannot tell you if a specific remote will work with your set; the term 'universal' smells like a reason for a law suit, they should be called 'multi-brand' since I also have several, including 'learning' remotes that refuse to learn from Ilo or Olevia remotes.
The testers once cost ~ $30 US but checking eBay, I found one for $10:
IR Remote tester
It could be that the receiving end in the set, the IR receiver or its associated decoding circuitry has failed. 
The overall reliability of the sets (particularly flat panel) built within the past 5 years has really plummeted; there seems to be no company that is not impacted from this decline in quality. Part of the problem lays in the components (especially capacitors)  and these are all coming from China. 

If it's failing to turn on reliably, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself. 
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
 
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
 
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself but it will likely have the same problem eventually unless they have altered the design.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

If it's failing to turn on reliably, the main power supply is probably at fault and without some technical background and a couple of test instruments, you will not be able to do the repair yourself. 
What you can do though is; unplug the set, let it stand overnight or at least several hours, remove the back panel and look for a separate board with mostly larger components on it; it will have a ferrite core (no laminations as with a line-frequency part) transformer on it and several larger capacitors which are cylindrical and mounted vertically to the board.
 
Before touching anything inside, especially on that board, allow several hours to be safe since the larger capacitors can hold a painful voltage charge for some hours.  
 
If you see signs of overheating such as discoloration of the board material, it may not be repairable but if you can find a part number on the board, you might be able to buy the power supply and install it yourself but it will likely have the same problem eventually unless they have altered the design.
If there are no signs of heat damage to the board, there may be companies offering to repair it as a subassembly instead of repairing the whole set which could be much more expensive.
If you choose to replace or have it done, the power supply still may not be at fault since most are capable of switching on and off if a downstream problem is causing an overload.

You do know that this model TV takes about 5-10 seconds to come on after you press the on button, right?

Press it once to get the green LED, then wait. If it doesn't display the blue AKAI splash screen within 15 seconds, the TV is not working as it should.

Also remember that this model has two RF input jacks. As seen from the back of the TV, the jack on the far right is the one to use for analog TV, analog cable, coax out to TV from a cable box, or rf out from a vcr.

Don't use the one on the far left. It is for input to the ATSC OTA DTV tuner only.

Most likely there is a real problem with your TV, but in the video, you are pressing the on/off button in rapid succession. That will never work with this model.

Are you sure you replaced all of the bad ones?Did you look at the top,and bottom of all the capacitors?Can you see the picture if you shine a flashlight on the screen?Did you replace any capacitors on the inverter that lights up the bulbs for the backlight,or just the ones on the power board?I hope this helps.If you have any questions,please let me know.Thank You very much!


Tyler

I don't remember exactly which ones I replaced.Look at the capacitors on the power board,and replace any that have the top,or bottom bulged out.The capacitors didn't cost much,maybe around $10 with shipping,depending on how many you need.Do you have your power board out?I hope this helps.If you have any questions,please let me know.
Thank You very much!
Tyler

If the 35 volts fit in the space provided for the 16 volts, is OK to use them but they must be 1000uF.

You will need to replace the power supply or get it repair because the manufacturers are not longer producing these service parts.
I repair these power supplies, let me know if you need further assistance or you can write to [email protected] for more info.

This is probably due to damaged inverter board. The best thing to do will be to get a replacement part from sears or somewhere else. Also if you can get me the part number i can help you find a replacement online.. Just in case..

the arrowed stripe indicates the polarity, wherein the arrows are pointing to the negative (-) pin

If power supply works do you have the number on it there are 2 different ones that work how do I pay you email me [email protected] thanks

Oddly, entering only the model number - LCT2785TA - brought up only pertainent messages although I see it often that some folks manage to enter car problems under washing machines for example so it isn't only the Fixya search facilities that are screwed up, sometimes it is an entry error.
Now, I'll see if I can find your original problem message since you didn't bother to keep it connected to your complaint. 

You asked: "is m8 the part #"

I don't see any thread for an original post, so I'm not sure just who you are asking, or what part you are refering to.

I can tell you this:

m8 is not a common part number, although I'm sure someone used it somewhere.

A MUCH MORE COMMON USE OF "m8" :

The term "m8" is often used as an abbrevation for the word "mate", commonly used as a friendly greeting or salutation, mainly in England and surrounding areas.

If that's not the case, maybe you could include a little more detail with your question.
Hope this helps you out, m8.

Sincerely ,
=doublèdgè=

I hope you are aware of how the individual pixels are controlled via an X-Y matrix. These are contained in ICs that are normally not replaceable individually by hand since they are installed by robotic machinery that is far more competent than the human hand.
The LCD itself is probably without problems but I suspect the drivers (which could be proprietary) may not be separable from the screen assembly as the panel may often be supplied by one company and the rest by the manufacturer whose name appears on the set.  

I'm not sure if Akai has made any of the sets that carry their name; some have come from Samsung and others purportedly by Funai but when I have tried to find service information on given models, it has been a dead end regardless of who made it. The true manufacturers refuse to recognize model numbers assigned by Akai.
If you had just burned resistors, I might be able to help you but when missing, you're kind of stuck. 

Nine did this also. If you change the Closed Caption settings it goes away. Know not why.

Hello to all from Tom Arnold, WA6OVP

Subject: Repair of computer monitors or flat panel TV’s.

History:
Recently my wife's 27-inch AKAI (LCT21AS) 27-inch flat panel HDTV with DVD player quit working. Years ago, when I had an analog computer monitor quit operating; Joe Fadden WA6DDF had mentioned to me, that often computer monitor problems were caused by the monitor's power supply. Joe also said these power supply problems were often caused by failed electrolytic capacitors. Joe said he was able to fix many computer monitors by just changing all of the power supply electrolytic capacitors. Rather the fix that failed monitor, I just a bought a new one.

Symptoms:
The inoperative HDTV had been bought at COSTCO and had already been returned once to a COSTCO repair center for repairs. Cost to ship and insure the HDTV was 67 dollars. We received back a new HDTV set. Turn around time was over a month, with many long distance telephone calls being required. The new HDTV worked for about three months after it was received. When the returned HDTV failed, it trapped a DVD disc that had been left in the HDTV DVD player. The new HDTV failure symptoms were the same as the original HDTV failure. The red led indication would not change to green when the remotes power on button was pushed. There was no picture and no sound. The remote is required to operate the TV set.

Economics:
My wife's HDTV with internal DVD player was very expensive. Worse yet, the trapped DVD disc was the movie Flash Gorden Space Soldiers 1936. A local TV shop wanted 85 dollars to look at the failed HDTV; repairs were 75 dollars labor an hour plus parts. I quickly figured out that if I could fix the problem it would save a lot of time and money.

Internet Search:
I checked the Internet to determine if other AKAI owners had similar problems with their HDTV sets. There were lots of AKAI 27 inch and 32 inch HDTV set owners listing problems. Without exception all of the complaints concerned the HDTV power supply PC board and failed electrolytic capacitors.

General Internet Consensus:
Most of the AKAI HDTV sets worked just great and that many had been sold worldwide. There were some AKAI HDTV sets that did have power supply problems. Most of the AKAI HDTV set owners were not very pleased with either AKAI or the COSTCO response to the inoperative HDTV power supply problem.

Trouble Shooting:
All electrical power was removed from the HDTV set. The HDTV was placed face down on a workbench with a piece of cardboard to protect the display screen. The HDTV back panel cover was removed. There were many screws of several different sizes. The power supply PC board was separate from the rest of the set's components and was easily identified. The power supply PC board contained several different individual different voltage power supplies. Three electrolytic capacitors located on the PC board had obviously failed. The tops of these three capacitors were puffed out. Often when electrolytic capacitors fail they get over heated and the top of the capacitor is puffed out displaying an over pressurized appearance. The power supplies on the PC board were of the switching type. Switching type power supplies are also used in computer monitors to save money and weight.

Power Supply PC Board Removal:
The power supply PC board was mounted to the HDTV back panel with several screws. These screws were removed. There also several multi-pin connectors attached to the PC board. These connectors were numbered with a black felt marker to ensure correct reinstallation. The connectors were Hot-glued in place. A sharp knife was used to remove the hot glue. The connectors were removed.

Repair:
The three suspect failed capacitors were easily removed. The three capacitors were each 1000 ufd and rated at 16 working volts. The other power supply PC board electrolytic capacitors were visibly checked. Three new capacitors were installed, they were rated at 1000 ufd at 25 working volts. On the PC board the three electrolytic capacitors were in just one of the power supply circuits and were identified as EC18, EC19, and EC20.

The New Electrolytic capacitors:
These were low impedance / high reliability radial lead polarized aluminum capacitors, they have a plus and minus connection pins. Correct installation of any polarized capacitor is required. The three new electrolytic capacitors were specifically designed and rated for service in switching type power supply circuits. Switching type power supply electrolytic capacitors need to be both very robust and designed for use in high frequency circuits. General-purpose aluminum electrolytic capacitors should not be used in switching type power supplies, if capacitors designed for switching power supplies can be obtained.

Final Repair Steps:
The PC board was reinstalled without the electrical connectors to the PC board being hot glued. The HDTV back panel cover was refastened. Watched episodes one through five of Space Soldiers. It was well worth the time and three electrolytic capacitors to fix the problem. The repairs saved a lot of time and money. The repair was very simple and not the least challenging. It took longer to remove and then reinstall the HDTV back cover panel than it took to replace the three failed capacitors.


Safety:
These types of repairs should not be attempted without a complete understanding of the dangers involved with working on electrical equipment, especially working around power supplies and charged capacitors. Proper desoldiering and soldiering techniques need to be used.

Conclusions:
Flat screen computer monitors and TV sets do fail. Repairs of electronic equipment can be very expensive. When your computer monitor or flat screen TV does fail, you might consider a visible inspection of the equipments power supply. A simple repair might save you a lot of time and money.

This piece is called RF connector. This problem is not so big but it will cost you some $35 for to replce it.
Find a technician near your location , he will help you.